I just finished my #38 yesterday for a group build. These decals are among the most difficult that I've ever done. My method is to lay the decal in place on the model. Then I coat it with Microscales Micro Sol and let it soften the decal. It's very important not to touch it at this time, the soft decal is VERY FRAGILE. I then use a hair dryer to set the decal. Put it on the high setting and hold it about 18 inches away. You can actually see the decal shrink and conform to the surface. If you get any wrinkles, recoat the area and heat again. It may take several applications to get them down. When I'm done with all the decals I seal them with a gloss clear coat and automotive wax.
Here's a few pics
Delbert...Awesome #3, what a flawless paint job. Being a diehard gordon fan I've never been real big on Earnhardts, big or little E, but that car is awesome.
Darren